My last name isn't that common, and several years ago, I worked for a different agency. Anyway I get this email reminding me to turn in my time sheet - but it wasn't from MY supervisor. When I moved to that "Region" I really messed up one particular supervisor, as now he/she had to look before they hit [send] - when I was in a different Region my name didn't pop up on the mailing list database, but there were now two of us with the same last name working in the same Region, and I was first on the database as my first name came sooner in the alphabet than the other person, so I'd often get his emails. Fortunately nothing bad. One day I was in the other office, and hunted down The other guy, "Hi, I'm B McC looking for R McC." The constant email mix-up was about to be solved, he was moving to a different Region. Then I solved it but good, I changed agencies. But we did figure out we are distant cousins.